— Have you found your English book? — I am not sure ____ I could have left it.A．whetherB．whatC．whenD．where-高中英语-n多题

◎ 题干

— Have you found your English book?
— I am not sure ____ I could have left it.

A．whether

B．what

C．when

D．where

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“— Have you found your English book? — I am not sure ____ I could have left it.A．whetherB．whatC．whenD．where…”主要考查了你对【状语从句】，【限制性定语从句】，【主语从句】，【同位语从句】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

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